9-30
Cisco ONS 15600 Reference Manual, R7.2
Chapter 9 Management Network Connectivity
9.7.3 OSI Connectionless Network Service
Figure 9-20 shows the ISO-DCC NSAP address with the default values delivered with the ONS 15600.
The System ID is automatically populated with the node MAC address.
Figure 9-20 ISO-DCC NSAP Address
System System identifier The ONS 15600 system identifier is set to its IEEE 802.3 MAC
address. Each ONS 15600 supports twelve OSI virtual routers. Each
router NSAP system identifier is the ONS 15600 IEEE 802.3 MAC
address + n, where n = 0 to 2. For the primary virtual router, n = 0.
SEL Selector The selector field directs the protocol data units (PDUs) to the correct
destination using the CLNP network layer service. Selector values
supported by the ONS 15600 include:
•
00—Network Entity Title (NET). Used to exchange PDUs in the
ES-IS and IS-IS routing exchange protocols. (See the
“9.7.4.1 End System-to-Intermediate System Protocol” section
on page 9-32, and “9.7.4.2 Intermediate System-to-Intermediate
System” section on page 9-32.)
•
1D—Selector for Transport Class 4 (and for FTAM and TL1
applications (Telcordia GR-253-CORE standard)
•
AF—Selector for the TARP protocol (Telcordia GR-253-CORE
standard)
•
2F—Selector for the GRE IP-over-CLNS tunnel (ITU/RFC
standard)
•
CC—Selector for the Cisco IP-over-CLNS tunnels (Cisco
specific)
•
E0—Selector for the OSI ping application (Cisco specific)
NSELs are only advertised when the node is configured as an ES.
They are not advertised when a node is configured as an IS. Tunnel
NSELs are not advertised until a tunnel is created.
Table 9-9 NSAP Fields (continued)
Field Definition Description
39.840F.80.000000.0000.0000.0000.xxxxxxxxxxxx.00
131598
AFI IDI Reserved Area System IDRDORG
Authority
and
Format
Identifier
SEL
NSAP
Selector
DFI
DSP
Format
Identifier
Routing
Domain
Initial
Domain
Identifier
